August Smart Lock, 3rd Gen technology – Dark Gray. Requires iOS (9.0 or higher) or Android (5.0 or higher) smartphone

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Lock and unlock your door, grant keyless access and keep track of who comes and goes, all from the August app.
Keep your existing lock and keys. Simply attaches to your existing deadbolt on the inside of your door. Install in under 10 minutes with just a screwdriver.
Grant family, friends or the dog walker unlimited access or limit it to a few weeks, hours, or minutes.
Only August has Door Sense, a sensor that tells you if your door is securely closed or left opened.
Unlocks automatically as you arrive. Never fumble for keys, shopping, bags or kids when unlocking the door again. Auto Lock can be timed to lock as the door closes.
Add an August Wi-Fi Connect Bridge (sold separately) for Remote access or Alexa integrations.
Add an August Smart Keypad for secure key-code entry to your lock. Sold separately.
Refer to the PDF named “Other content” below for compatibility details of the product
August App is available for download via Apple Store or Google Play. Requires iOS 9. 0 or higher, or Android 5. 0 or higher.
Requires 4 AA Batteries. Included in box for initial install & use.